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20110505

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Two Excellent Animations

Courtesy of wikipedia...
http://en.wikipedia.org/wiki/File:ConstellationGPS.gif
http://en.wikipedia.org/wiki/File:ConstellationGPS.gif
http://en.wikipedia.org/wiki/File:Geostat.gif#filelinks
http://en.wikipedia.org/wiki/File:Geostat.gif#filelinks

Spotting and Modeling GPS Satellites

An outdoor activity!

Safety Planning

  • Long hair tied back.
  • Closed-toe shoes.
  • Clothes could be stained.